Table 3 Characteristic of patients who developed lung cancer at the time of lung cancer diagnosis (n = 135)
No. (%) or mean ± SD or median (IQR) | |
|---|---|
Age, years | |
At the time of IPF diagnosis | 65.2 ± 7.2 |
At the time of lung cancer diagnosis | 69.0 ± 7.2 |
Gender, male | 128 (94.8) |
Smoking | |
Current smoker | 26 (19.3) |
Ex-smoker | 108 (80.0) |
Pack-year | 41.7 ± 13.7 |
Comorbidities | 96 (71.1) |
Diabetes | 41 (30.4) |
Chronic heart disease | 33 (24.4) |
Previous history of tuberculosis | 29 (21.5) |
Other malignancy | 16 (11.9) |
Cerebrovascular disease | 8 (5.9) |
Chronic liver disease | 6 (4.4) |
Chronic kidney disease | 5 (3.7) |
Symptoms | |
Development of new symptoms | 58 (43.0) |
Change of symptoms | 24 (17.8) |
Pulmonary function test at lung cancer diagnosis | |
FVC, % (n = 125) | 84 (71–93) |
DLco, % (n = 113) | 62 (50–77) |
TLC, % (n = 99) | 83 (73–91) |
6-min walk test, distance, meter (n = 38) | 420 (360–474) |
6-min walk test, lowest saturation, % (n = 38) | 89 (82–93) |